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Installation and Setup VirTis BenchTop 2K, 4K and 6K

4 Revision 004, 12/09

Vacuum Pump Installation

A remotely mounted vacuum pump is required for operation of your BenchTop freeze

dryer. The vacuum pump must be a two-stage, high-vacuum pump that does not

exceed the maximum allowable amperage listed on the unit’s serial tag and back

panel label.

The following parts are included with your BenchTop unit for connection to the

vacuum pump:

• Four (4) feet of ¾-inch ID (Inside Diameter) rubber vacuum tubing

• One (1) 90° rubber elbow

• One (1) plastic connector

Installing the Vacuum Pump

Notes: If you are installing a previously used vacuum pump, refer to the

vacuum pump manual and the General Maintenance section of this manual.

Ensure that the pump was properly maintained prior to installation.

A vacuum pump inlet port adapter and sufficient tubing are required for

connection to the vacuum pump. If you need assistance, please contact SP

Industries.

1. Position the vacuum pump in a convenient location near the

freeze dryer. Ensure that the pump will be easily accessible

during routine maintenance.

2. Cut the supplied vacuum tubing as short as possible. Allow

enough length between the vacuum pump and the

BenchTop unit.

Note: Clamp and cut the ¾-inch ID vacuum hose. If you do not

wish to cut the hose, it may be used at its full length, but may take

up more space than necessary.

3. Locate the inlet port on your vacuum pump. Refer to the

vacuum pump manual.

4. Remove any material with the exception of the inlet filter

screen and gasket.

5. Place the adapter on the inlet port and secure with a fitting.

If an adapter is not present, contact SP Industries.

6. Remove all objects from the vacuum pump outlet port, but

retain for future use.

7. Connect the BenchTop unit to the vacuum pump using the

¾-inch vacuum tubing. If connecting to a vacuum pump

purchased from SP Industries, attach the ¾-inch tubing from

the BenchTop to the vacuum pump intake nipple, add a tubing clamp and

tighten securely.

Vacuum pump

8. Check the vacuum pump oil level. The oil level should read half way up the

sight glass. Add oil only if necessary. DO NOT OVERFILL!

9. Verify that the power switch on the vacuum is off. The LED next to the VAC

button on the unit’s front panel must be off.

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